The nation's health, wealth, and security rely on the supply and distribution of certain goods and services. The array of physical assets, processes and organizations across which these goods and services move are called critical infrastructures (e.g. electricity, the power plants that generate it, and the electric grid upon which it is distributed or financial capital, the institutions that manage it, and the record- keeping and communications that move it from one institution to another). digital.library.unt.edu/ark:/67531/metacrs1253/